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Note 3 - Related Party Transactions (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Aug. 11, 2022
Mar. 31, 2023
Dec. 31, 2022
Mar. 31, 2022
Dec. 31, 2021
Cohanzick [Member] | Merger Agreement [Member]          
Business Combination, Reimbursable Amount $ 594,152   $ 470,329    
Business Combination Overpayment Amount Receivable     123,823    
Cohanzick [Member] | Crossing Bridge Advisor LLC [Member]          
Operating Lease Expense, Related Party   $ 21,814   $ 0  
Cohanzick [Member] | Crossing Bridge Advisor LLC [Member] | Sharing of Certain Staff, Office Facilities and Administrative Services [Member]          
Due to Affiliate, Interest Rate with Extension   0.00%      
Related Party Transaction, Amounts of Transaction         $ 1,756,334
Cohanzick [Member] | Crossing Bridge Advisor LLC [Member] | Services Agreement [Member]          
Related Party Transaction, Quarterly Fee, Percentage of Monthly Weighted Average Assets Under Management   0.05%      
Revenues   $ 153,864   $ 0  
Cohanzick [Member] | Crossing Bridge Advisor LLC [Member] | Operating Accounts Receivable [Member]          
Accounts Receivable, after Allowance for Credit Loss   $ 153,864 $ 160,330